Home / 105,529.60-158,403.52-70,712.56

Finding the Fourth Proportional to 105,529.60, 158,403.52 and 70,712.56

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Solution

The fourth proportional to 105,529.60, 158,403.52 and 70,712.56 is: 106,141.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,529.60 : 158,403.52 = 70,712.56 : x
  2. Step 2: Convert to fraction form
    105,529.60/158,403.52 = 70,712.56/x
  3. Step 3: Cross multiply
    105,529.60x = 158,403.52 × 70,712.56
  4. Step 4: Simplify right side
    105,529.60x = 11,201,118,412.21
  5. Step 5: Solve for x
    x = 11,201,118,412.21/105,529.60
  6. Step 6: Final answer
    x = 106,141.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.